Correct Answer - Option 4 : 140 m
Given:
Speed of train = 66 km/hr
Length of bridge = 465 m
Time taken to cross the bridge = 33 sec
Formula used:
Distance = Speed × Time
Calculation:
Let the length of the train = x m
Distance covered by the train = length of train + length of bridge
⇒ Distance = (x + 465) m
As, Distance = Speed × Time
x + 465 = [66 × (5/18)] × 33
⇒ x + 465 = 605
⇒ x = 605 – 465 = 140 m
∴ Length of the train is 140 m
